cueball-resolver

cueball-resolver

Custom Resolver for https://joyent.github.io/node-cueball
Static IP resolver with add and remove interface.

Install

npm install cueball-resolver

API

See for the complete API: https://joyent.github.io/node-cueball/#resolver

new Resolver(options)

• options -- Object, with keys:
  • defaultPort -- optional Number (defaults to 80), fallback port to use for backends that only have an address property
  • backends -- Array of objects, each having properties (optional, defaults to []): ** address -- String, an IP address to emit as a backend ** port -- Number (optional, defaults to 80), a port number for this backend

addBackend(backend)

Adds a new backend.

• backend -- object

• address -- String, an IP address to emit as a backend
• port -- Number (optional, defaults to 80), a port number for this backend

Returns with the backend.

removeBackend(backend)

Removes a backend.

• backend -- object

• address -- String, an IP address to emit as a backend
• port -- Number (optional, defaults to 80), a port number for this backend

Returns with the backend.

resetBackends([backends])

Clears all backends and add news if provided.

• backends -- Array of objects, each having properties (optional, defaults to []):
  • address -- String, an IP address to emit as a backend
  • port -- Number (optional, defaults to 80), a port number for this backend

How to use

const bunyan = require('bunyan')
const cueball = require('cueball')
const restifyClients = require('restify-clients')
const Resolver = require('cueball-resolver')

const agent = new cueball.HttpAgent({
  log: bunyan.createLogger({
    name: 'agent-test',
    level: process.env.LOG_LEVEL || 'error'
  }),
  spares: 2,
  maximum: 4,
  recovery: {
    default: {
      timeout: 50,
      retries: 2,
      delay: 5,
      maxDelay: 50
    }
  }
})

const client = restifyClients.createStringClient({
  url: 'http://test.host.com',
  agent
})

const resolver = new Resolver({
  backends: [
    {
      address: '127.0.0.1',
      port: 1234
    }
  ]
})

resolver.start()

agent.createPool('test.host.com', {
  resolver
})

client.get('/test', (err, req, res, data) => {}

How it works

See: https://joyent.github.io/node-cueball/#resolver

Changelog

1.0.0 (2017-10-05)

Features

• resolver:
  • apply internal queue (5bd42ac8)
  • add reset backends method (80efc22d)